Ah, looks like this was changed in 2015 and I was unaware:
http://www.project1999.com/forums/sh...6&postcount=44
As for the "Stop Thief!" messages - you'll need to find some examples from live EQ for developers to make the change. I am going to agree with you that they should say this, since the message is intended to alert other players of pick-pocketing rogues so they can't steal loot with impunity.